CN214449867U - Blackboard eraser with dustproof function - Google Patents
Blackboard eraser with dustproof function Download PDFInfo
- Publication number
- CN214449867U CN214449867U CN202120063886.XU CN202120063886U CN214449867U CN 214449867 U CN214449867 U CN 214449867U CN 202120063886 U CN202120063886 U CN 202120063886U CN 214449867 U CN214449867 U CN 214449867U
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- China
- Prior art keywords
- water
- water outlet
- blackboard
- wiping cloth
- valve
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 232
- 239000004744 fabric Substances 0.000 claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 238000003825 pressing Methods 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims description 21
- 239000010935 stainless steel Substances 0.000 claims description 21
- 238000004026 adhesive bonding Methods 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 230000035622 drinking Effects 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 239000008213 purified water Substances 0.000 claims description 4
- 239000008399 tap water Substances 0.000 claims description 4
- 235000020679 tap water Nutrition 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims 2
- 230000002265 prevention Effects 0.000 claims 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 210000004072 lung Anatomy 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- Bathtubs, Showers, And Their Attachments (AREA)
Abstract
The utility model discloses a blackboard eraser with dustproof function belongs to school's teaching aid field. Solves the technical problems that the erasing of the handwriting is labor-consuming and the user of the blackboard eraser easily sucks chalk dust floating in the air into the lungs, which is not beneficial to health. The blackboard eraser with the dustproof function comprises a seat body, a piece of wiping cloth, a water storage cavity and a pressing type water outlet and water stop mechanism, wherein when the front of the wiping cloth is pressed on a blackboard by the grabbing seat body, the blackboard or the wiping cloth extrudes the pressing type water outlet and water stop mechanism, a water outlet is opened by the pressing type water outlet and water stop mechanism, clear water flows out of the water outlet after passing through a water outlet groove and wets the wiping cloth, when the front of the wiping cloth is far away from the blackboard, the water outlet is automatically closed by the pressing type water outlet and water stop mechanism, and the clear water is sealed in the water storage cavity. The utility model is used for expand the function of blackboard eraser, reduce the harm that the chalk dust caused of cleaning.
Description
Technical Field
The utility model belongs to school's teaching aid field, especially a blackboard eraser with dustproof function.
Background
The blackboard eraser is a teaching tool commonly found in schools, and users of the blackboard eraser are usually teachers or students who can grasp the blackboard eraser to erase writing written on the blackboard.
The prior blackboard eraser comprises a seat body and wiping cloth bonded with the seat body, wherein the seat body is made of rigid plastics, and the wiping cloth is made of cotton cloth or sponge. The blackboard eraser user can grasp the seat body to drive the eraser cloth to erase the writing written by the chalk on the blackboard.
The inventor finds that the prior art has at least the following technical problems:
when the erasing cloth in the prior art is used for erasing the writing written by chalk on the blackboard, on one hand, the friction force applied to the blackboard by the erasing cloth is large, and the erasing of the writing is labor-consuming; on the other hand, part of chalk dust falls down along with the blackboard eraser, and part of chalk dust floats in the air, so that the health of a user of the blackboard eraser is inevitably damaged after the user sucks the dust floating in the air into the lungs.
SUMMERY OF THE UTILITY MODEL
The utility model provides a blackboard eraser with dustproof function has solved the more laborious and not good for healthy technical problem in the easily inhaling the lung with the chalk dust that floats in the air of erasing the writing that prior art exists.
The embodiment of the utility model provides a following technical scheme at least:
the embodiment of the utility model provides a blackboard eraser with dustproof function, go out water stagnant water mechanism including pedestal, wiper, water storage chamber and push type, wherein:
the water storage cavity is arranged in the seat body and clean water is stored in the water storage cavity, a water inlet end head communicated with the water storage cavity is arranged at the edge of the seat body, a cover cap is arranged at the water inlet end head, and the cover cap is in threaded connection with the water inlet end head;
a water outlet groove communicated with a water outlet of the water storage cavity is formed in the water storage cavity, and the pressing type water outlet and water stop mechanism is arranged at the water outlet groove and the water outlet;
the back surface of the wiping cloth is detachably connected with the seat body through a thread gluing, a button or a rope;
the front surface of the wiping cloth is used for wiping chalk marks on the blackboard;
when the seat body is grasped to press the front face of the wiping cloth on the blackboard, the blackboard or the wiping cloth extrudes the pressing type water outlet and water stop mechanism, the pressing type water outlet and water stop mechanism opens the water outlet, clear water flows out of the water outlet after passing through the water outlet groove and wets the wiping cloth, when the front face of the wiping cloth is far away from the blackboard, the pressing type water outlet and water stop mechanism automatically closes the water outlet, and the clear water is sealed in the water storage cavity;
push type play water stagnant water mechanism includes support, guide bar, stainless steel spring, water control valve and sealing washer, wherein:
the bracket is fixedly connected with the inner wall of the water storage cavity, and a plurality of water through ports are formed in the bracket;
the guide rod and the bracket are fixedly connected or are in an integrated structure;
the water control valve comprises a disc-shaped head valve head and a rod-shaped rod valve body, and the outer diameter of the head valve head is larger than the diameter of the rod valve body;
the sealing ring is sleeved and fixed on the valve body and is abutted against the valve head, and a gap is formed between the valve body and the water outlet;
the stainless steel spring is sleeved on the guide rod, one end of the stainless steel spring is propped against the bracket, and the other end of the stainless steel spring is propped against the valve head of the water control valve;
the valve head and the sealing ring of the water control valve are positioned in the water outlet groove, and the valve body of the water control valve penetrates through the water outlet and the part of the valve body penetrating through the water outlet is abutted to the wiping cloth;
when the wiping cloth or the blackboard extrudes the tail end of the rod valve body, the head valve head and the sealing ring are opened, the gap between the inner wall of the water outlet and the rod valve body is compressed, the clear water passes through the water outlet groove and then flows out and wets the gap between the inner wall of the water outlet and the rod valve body, and when the wiping cloth or the blackboard stops extruding the tail end of the rod valve body, the stainless steel spring stretches and pushes the head valve head and the sealing ring to close the gap between the inner wall of the water outlet and the rod valve body.
Preferably or optionally, the seat body is made of plastic materials.
Preferably or optionally, the length of the guide bar is between 1/2-2/3 of the length of the stainless steel spring in a natural state.
Preferably or optionally, the outlet recess is formed as an annular guide wall body around the inner port of the outlet.
Preferably or optionally, the outer diameters of the valve head and the sealing ring are smaller than the inner diameter of the water outlet groove.
Preferably or optionally, the edge of one end, abutted against the wiper or the blackboard, of the valve body of the water control valve is provided with a round angle.
Preferably or optionally, the base body comprises an upper base body and a lower base body which are fixedly connected, the support is fixedly connected with the upper base body, the water inlet end is arranged on the upper base body, the water outlet is arranged on the lower base body, and the water storage cavity is formed by splicing and connecting a cavity on the upper base body and a cavity on the lower base body.
Preferably or optionally, the number of the water outlets is at least two, each water outlet corresponds to one water outlet groove and one press type water outlet and water stop mechanism, and a counter bore for accommodating the water control valve is arranged on the back of the wiping cloth.
Preferably or optionally, the thread gluing and the button respectively comprise two components which are detachably connected with each other, the back surface of the wiping cloth is bonded with one of the components of the thread gluing or the button through a waterproof adhesive, and the base body is bonded with the other component of the thread gluing or the button through the waterproof adhesive.
Preferably or optionally, the clean water is tap water or drinking purified water.
Any one of the above technical solutions can produce at least the following technical effects:
because the utility model discloses in utilized water storage chamber and push type play water stagnant water mechanism, push type play water stagnant water mechanism can introduce the wiper with the clear water of water storage chamber the inside when using this blackboard eraser, thereby can clean the blackboard through moist wiper, the clear water has not only moistened the chalk writing, the clean effect of wiper has been improved, and can moisten the chalk dust, avoid it to float in the air, so solved that the erasing writing that prior art exists take effort and the blackboard eraser user is unfavorable for healthy technical problem in inhaling the lung with the chalk dust that floats in the air easily.
Drawings
Fig. 1 is a schematic view of a blackboard eraser with a dustproof function and a blackboard according to the present invention when in use;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a schematic view of the blackboard eraser with dust-proof function according to the present invention;
in the figure, 1, a seat body; 2. wiping cloth; 3. a water storage cavity; 4. a push type water outlet and stopping mechanism; 41. a support; 410. a water inlet; 42. a guide bar; 43. a stainless steel spring; 44. a water control valve; 441. a valve head; 442. a valve body; 45. a seal ring; 5. a water outlet groove; 6. capping; 7. a blackboard.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 3.
As shown in fig. 1-3, the embodiment of the utility model provides a blackboard eraser with dustproof function, including pedestal 1, wiper 2, water storage chamber 3 and push type play water stagnant water mechanism 4, wherein: the seat body 1 is made of plastic materials.
The water storage cavity 3 is arranged in the seat body 1 and clean water is stored in the water storage cavity, a water inlet end head communicated with the water storage cavity 3 is arranged at the edge of the seat body 1, a cover cap 6 is arranged at the water inlet end head, and the cover cap 6 is in threaded connection with the water inlet end head;
a water outlet groove 5 communicated with a water outlet of the water storage cavity 3 is arranged in the water storage cavity 3, and the pressing type water outlet and water stop mechanism 4 is arranged at the water outlet groove 5 and the water outlet;
the back of the wiping cloth 2 is detachably connected with the base body 1 through a thread gluing, a button or a rope;
the front surface of the wiping cloth 2 is used for wiping chalk marks on the blackboard 7;
when the front of the wiping cloth 2 is pressed on the blackboard 7 by the grasping seat body 1, the blackboard 7 or the wiping cloth 2 extrudes the pressing type water outlet and water stop mechanism 4, the water outlet is opened by the pressing type water outlet and water stop mechanism 4, clear water flows out from the water outlet after passing through the water outlet groove 5 and wets the wiping cloth 2, when the front of the wiping cloth 2 is far away from the blackboard 7, the water outlet is automatically closed by the pressing type water outlet and water stop mechanism 4, and the clear water is sealed in the water storage cavity 3.
Because the utility model discloses in utilized water storage chamber 3 and push type play water stagnant water mechanism 4, push type play water stagnant water mechanism 4 can introduce wiper 2 with the clear water of 3 the inside in water storage chamber when using this blackboard eraser to can clean blackboard 7 through moist wiper 2, clear water has not only moistened the chalk handwriting, has improved wiper 2's clean effect, can moisten the chalk dust moreover, avoids it to float in the air.
As an optional implementation manner, the pressing type water outlet and sealing mechanism 4 includes a bracket 41, a guide rod 42, a stainless steel spring 43, a water control valve 44, and a sealing ring 45, wherein:
the bracket 41 is fixedly connected with the inner wall of the water storage cavity 3, and a plurality of water through ports 410 are arranged on the bracket 41;
the guide rod 42 and the bracket 41 are fixedly connected or are in an integrated structure;
the water control valve 44 includes a disc-shaped valve head 441 and a rod-shaped valve body 442, the diameter of the valve head 441 is larger than that of the valve body 442;
the sealing ring 45 is sleeved and fixed on the valve body 442 and is abutted against the valve head 441, and a gap is formed between the valve body 442 and the water outlet;
the stainless steel spring 43 is sleeved on the guide rod 42, one end of the stainless steel spring 43 is propped against the bracket 41, and the other end of the stainless steel spring 43 is propped against the valve head 441 of the water control valve 44;
the valve head 441 and the sealing ring 45 of the water control valve 44 are positioned in the water outlet groove 5, the valve body 442 of the water control valve 44 penetrates through the water outlet, and the part of the valve body 442 penetrating through the water outlet is propped against the inside of the wiping cloth 2;
when the wiping cloth 2 or the blackboard 7 extrudes the tail end of the valve body 442, the valve head 441 and the sealing ring 45 open a gap between the inner wall of the water outlet and the valve body 442 and compress the stainless steel spring 43, clean water flows out from the gap between the inner wall of the water outlet and the valve body 442 after passing through the water outlet groove 5 and wets the wiping cloth 2, and when the wiping cloth 2 or the blackboard 7 stops extruding the tail end of the valve body 442, the stainless steel spring 43 stretches and pushes the valve head 441 and the sealing ring 45 to close the gap between the inner wall of the water outlet and the valve body 442.
The structure has the advantages of good reliability, convenient installation and compact structure.
Alternatively, the length of the guide rod 42 is between 1/2 and 2/3 of the length of the stainless steel spring 43 in the natural state. This dimensioning ensures a good guiding capability of the guide rod 42.
As an alternative embodiment, the outlet recess 5 is formed as an annular guide wall body around the inner port of the outlet. This configuration can provide a guide for the water control valve 44 and improve the sealing effect.
In an alternative embodiment, the outer diameters of the valve head 441 and the sealing ring 45 are smaller than the inner diameter of the water outlet groove 5. The arrangement of the structure is beneficial to the clean water to flow out from the clearance between the valve head 441 and the inner wall of the water outlet groove 5 and between the sealing ring 45 and the inner wall of the water outlet groove.
As an alternative embodiment, the edge of one end of the valve body 442 of the water control valve 44 abutting against the wiper 2 or the blackboard 7 is provided with a rounded corner. The rounded corners prevent damage to the wiper 2 caused by the ends of the water control valve 44.
As an optional implementation manner, the seat body 1 includes an upper seat body 1 and a lower seat body 1 which are fixedly connected, the bracket 41 is fixedly connected with the upper seat body 1, the water inlet end is disposed on the upper seat body 1, the water outlet is disposed on the lower seat body 1, and the water storage cavity 3 is formed by splicing and connecting a cavity on the upper seat body 1 and a cavity on the lower seat body 1. The arrangement of the structure can facilitate the installation of the parts in the base body 1.
As an optional implementation manner, the number of the water outlets is at least two, each water outlet corresponds to one water outlet groove 5 and one pressing type water outlet and stop mechanism 4, and a counter bore for accommodating the water control valve 44 is arranged on the back surface of the wiper 2. The arrangement of the plurality of pressing type water outlet and water stop mechanisms 4 can improve the water yield, and meanwhile, when one water outlet is blocked, the effect of water outlet cannot be influenced, and the reliability of the whole wetting device is improved.
As an optional embodiment, each of the hook and loop fastener and the button comprises two components detachably connected to each other, the back surface of the wiping cloth 2 is bonded to one of the hook and loop fastener or the button through a waterproof adhesive, and the seat body 1 is bonded to the other of the hook and loop fastener or the button through the waterproof adhesive.
As an alternative embodiment, the clean water is tap water or drinking purified water. Tap water or drinking purified water is easy to obtain and convenient to add water.
Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.
Claims (10)
1. The utility model provides a blackboard eraser with dustproof function, its characterized in that includes pedestal, wiping cloth, water storage chamber and push type play water stagnant water mechanism, wherein:
the water storage cavity is arranged in the seat body and clean water is stored in the water storage cavity, a water inlet end head communicated with the water storage cavity is arranged at the edge of the seat body, a cover cap is arranged at the water inlet end head, and the cover cap is in threaded connection with the water inlet end head;
a water outlet groove communicated with a water outlet of the water storage cavity is formed in the water storage cavity, and the pressing type water outlet and water stop mechanism is arranged at the water outlet groove and the water outlet;
the back surface of the wiping cloth is detachably connected with the seat body through a thread gluing, a button or a rope;
the front surface of the wiping cloth is used for wiping chalk marks on the blackboard;
when the seat body is grasped to press the front face of the wiping cloth on the blackboard, the blackboard or the wiping cloth extrudes the pressing type water outlet and water stop mechanism, the pressing type water outlet and water stop mechanism opens the water outlet, clear water flows out of the water outlet after passing through the water outlet groove and wets the wiping cloth, when the front face of the wiping cloth is far away from the blackboard, the pressing type water outlet and water stop mechanism automatically closes the water outlet, and the clear water is sealed in the water storage cavity;
push type play water stagnant water mechanism includes support, guide bar, stainless steel spring, water control valve and sealing washer, wherein:
the bracket is fixedly connected with the inner wall of the water storage cavity, and a plurality of water through ports are formed in the bracket;
the guide rod and the bracket are fixedly connected or are in an integrated structure;
the water control valve comprises a disc-shaped valve head and a rod-shaped valve body, and the diameter of the valve head is larger than that of the valve body;
the sealing ring is sleeved and fixed on the valve body and is abutted against the valve head, and a gap is formed between the valve body and the water outlet;
the stainless steel spring is sleeved on the guide rod, one end of the stainless steel spring is propped against the bracket, and the other end of the stainless steel spring is propped against the valve head of the water control valve;
the valve head and the sealing ring of the water control valve are positioned in the water outlet groove, and the valve body of the water control valve penetrates through the water outlet and the part of the valve body penetrating through the water outlet is abutted to the wiping cloth;
the wiper or the blackboard extrusion during the end of valve body, the valve head with the sealing washer is opened the delivery port inner wall with clearance and compression between the valve body the stainless steel spring, the clear water process follow behind the water outlet recess the delivery port inner wall with clearance between the valve body flows and is moist the wiper, the wiper or the blackboard stops the extrusion during the end of valve body, the stainless steel spring extends and promotes the valve head with the sealing washer is closed the delivery port inner wall with clearance between the valve body.
2. The blackboard eraser with the function of dust prevention according to claim 1, wherein the base body is made of plastic material.
3. The blackboard eraser with the function of preventing dust according to claim 1, wherein the length of the guide bar is 1/2-2/3 of the length of the stainless steel spring in a natural state.
4. The blackboard eraser with the function of preventing dust according to claim 1, wherein the water outlet groove is formed as an annular guide wall body around the inner port of the water outlet.
5. The blackboard eraser with the function of dust prevention according to claim 4, wherein the outer diameters of the valve head and the sealing ring are smaller than the inner diameter of the water outlet groove.
6. The blackboard eraser with the dustproof function according to claim 1, wherein the edge of one end of the valve body of the water control valve, which is abutted against the eraser or the blackboard, is provided with a rounded corner.
7. The blackboard eraser with the dustproof function according to claim 1, wherein the seat body comprises an upper seat body and a lower seat body which are fixedly connected, the bracket is fixedly connected with the upper seat body, the water inlet end is arranged on the upper seat body, the water outlet is arranged on the lower seat body, and the water storage cavity is formed by splicing and connecting a cavity on the upper seat body and a cavity on the lower seat body.
8. The blackboard eraser with the dustproof function according to claim 1, wherein the number of the water outlets is at least two, each water outlet corresponds to one water outlet groove and one pressing type water outlet and water stop mechanism, and a counter bore for accommodating the water control valve is arranged on the back surface of the eraser.
9. The blackboard eraser with the dustproof function according to claim 1, wherein the thread gluing and the button each comprise two components detachably connected with each other, the back surface of the eraser is bonded to one of the thread gluing or the button through a waterproof adhesive, and the base is bonded to the other one of the thread gluing or the button through a waterproof adhesive.
10. The blackboard eraser with the dustproof function according to claim 1, wherein the clear water is tap water or drinking purified water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120063886.XU CN214449867U (en) | 2021-01-04 | 2021-01-04 | Blackboard eraser with dustproof function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120063886.XU CN214449867U (en) | 2021-01-04 | 2021-01-04 | Blackboard eraser with dustproof function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214449867U true CN214449867U (en) | 2021-10-22 |
Family
ID=78111515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120063886.XU Expired - Fee Related CN214449867U (en) | 2021-01-04 | 2021-01-04 | Blackboard eraser with dustproof function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214449867U (en) |
-
2021
- 2021-01-04 CN CN202120063886.XU patent/CN214449867U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220117 Address after: 393 Binshui West Road, Xiqing District, Tianjin Patentee after: TIANJIN NORMAL University Address before: 300074 Room 202, gate 10, courtyard 20, xiangrongli, binyou Road, Machang street, Hexi District, Tianjin Patentee before: Feng Zhijing |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211022 |